Question

Find the product of (5m + 4n +2) (5m+ 4n-2)

Answer 1

Answer:

(5m+4n+2)(5m+4n-2)

=25m+20mn-10m+20mn+16n-8n+10m+8n-4

=20mn+20mn+25m-10m+10m+16m-8n+8n-4

=40mn+25m+16m

=40mn+41m

=81mn.

Answer 2

Answer:

81 mn is the answer.

Hope it helps you!